Loose-leaf book or binder



Jan. 23, 1923. f l 1,443,267.

ml". B. A. KIRSTEN. A Loose LEAF BooK 0R BINDER. FILED MMLZI, 1922.

Patented dan.. 2d, ig'f.

iran grarerarer ortica.

. Loose-LEAF'BOOK on Binnen. "1

application flied MarchA 2i, 1922. seraino. 545,404.

To .fl/ZZ lwhom it' may concern.'

Be it known thatl, FREDERICK BENJAMIN Anonimi KinsrnN, a sulogectoiA the hing of Great ldrita-in'and'lfreland7 anda resident oif` the postal district of Balwyn, a suburb of the city of Melbourne, in the county of Bourke, State of Victoria, Commonwealth of Aus tralia (whose post-oice address is Khama, Kireep lioachin thesaid"` postal district ci Balwyn), have invented certain new and useful `improvements in Loose-Leaf Books' or Binders, of which the followingis a speciication`y i c This invention relates to loose leaf books or binders of the type in which `the two halves or sections `oi the vhoolr cover are united by `iiexilole binding` thongs or tapes upon which one of the cover sections is adapted to Uslide in relation to the other section. i c f The object ofthe present invention is to provide an improved mechanism of simple and inexpensive construction for exerting-a powerful tension upon said thongs whereby the two cover sections are drawn tightly together upon the leaves and` are locked in such tightened position so that yaccidental displacement yor unauthorizedremoval of the leaves is eectively prevented.`

Referring to the `drawings which form part of this specification`zi "Fi re l is a view looking at the interior of the Slidahle cover section of a loose leaiE bool; or binder showing the invention applied thereto. rPortions are broken away for convenience of illustration.

Figure 2 isa view looking at part of the inner face of the slidahle cover section showinff the apertures through which the `inventin is operated, 't Y Figure 3 isa section taken on line A-e of Figure l.

Figure Ltis a section on line fB-B of Figure 1.

Figure 5 is a detail view showing the pivotal connection of the guide piece to the tightening lever, the sliding grip being re-` moved for convenience of illustration.

'Figure 6 is an enlarged section taken longitudinally through the lt'astening thong showingthe manner in which the latter is secured'to the guide piece by the sliding 1 l grFgigure 7 is a section on line CC of Figure 6.

Figure 8 is .end "viewof the sliding grip showing' the teeth or ser-rations thereon. According to the invention, one end of a tightening lever 2 is pivoted at 3 to the slidable cover section'li this lever being `provi'ded near its other end with anupstanding 1 iinger'piece 6 hy which the lever is operated to exert tensiony upon the binding thongs andthus draw the cover sections tightly together on the leaves as aforesaid.

Vl'ivotedat 7 to said tightening lever is ya guide piece 8 through which passes the usual siifigle fastening thongor tape 9 which is connected at its inner end to the `centre of a. cross lhar ll uniting the variousvhinding thongs 'l2 which extend between the cover sections' and through the openings or gullets inthe leaves. These binding thongs l2 `are secured at their outer ends to the other 'cover` section 18 in the usual manner. The pivoted guide piece 8 may he `conveniently formed of flat plate the opposite side edges of which are inturned as at i4 to form a guide-way through which the thongv9 passes.

Also accommodated by lsaid guide piece is a sliding grip ltwhich lis adapted to en gage and grip the thongr passing through the guide .piece thereby securing said thong tothe ,cuide piece and the tightening leverQ l so thaiJ when the latter `isoperated in one direction tension "is exerted on the thongs `to contract. the cover sections on the" kleaves whilst reverse movement of the lever 'causesy such tension to he relaxed. c

t The sliding grip referred to is provided at one end'with teeth or serrations 17 adapted to he embedded in the thong 9 and adjacent this toothed or serrated edge the `grip has an inclined portion 18 which is adapted to engagethe inturnedl portions 14 of the' guide pieceand thus force the teeth orserrations 1T into the thong when the grip is moved in i one direction whilst movement of the grip in the opposite direction causesthe thong to he released. The opposite end of the' sliding grip hasxan'upstanding lug or Afinger portion y1 9 by which the grip is pulled through the guide piece to Jforce'the teeth or serrations into the thong as aforesaid.

Carried by the tightening lever is a depending catch 2l `which is adapted to engage in holes or depressions 22 in a hase plateQS the form of a segment or arc struck from the pivotal point of the lever as in Figurel l so that when the lever 2 is drawn to the left 1n Figure l to tighten the thongs the vcatch 2l slips into an appropriate hole 22 and thus effectively retains the lever and thong in tightened position. Said catch is preferably of hooked or like shape as in Figure 4 being thus provided with an inclined face on one side so that it will rise out of the hole or depression when the lever is moved in one direction (to the left in Figures l and 4) but is firmly held in said hole by the tension of the thongs on the lever in the kopposite direction.

The outer or free end of the tightening lever preferably carries a locking piece or extension 24 of segmental form. rlhis locking piece may be formed integral with or attached to the tightening lever and is adapted to engagethe sliding bolt or latch 26 of a key actuated lock 27 which is attached to the slidable cover section so that when the key is turned in the lock the sliding bolt or latch thereof passes over said locking piece or extension as in Figures l and 3 and thus prevents the tightening lever being raised to release its catch from the hole or depression 22 in which it is engaged as above mentioned. Unauthorized manipug lation of the lever and removal of the leaves may thus be prevented.l

.The apparatus above described may be hidden from view within the slidable cover section, the inner face or wall of the latter being provided with apertures 29 in appropriate positions to pass the finger pieces on the vtightening lever and the sliding grip and thus permit of manipulation thereof and to enable the key to be inserted in the lock.

To separate the cover sections for removal of the leaves it is merely necessary to release the catch of the tightening lever by moving the latter slightly in an outward direction or to the left in Figure l so that the catch 2l is lifted out of the hole or depression 22 in which it is engaged. The lever may be now moved inwardly or to the right in Figure l so that the tension on the thongs is relaxed. By moving the sliding grip 16 outwardly in the pivoted guide piece the fastening thong 9 passing therethrough may be thus freed from the teeth or serrations of the grip and the cover sections drawn apart to the desired extent.

When it is desired to contract and lock the cover sections upon the leaves the outer end of the fastening thong 9 passing through the guide piece is first pulled to draw the cover sections upon the leaves as tightly as possible `by hand. The sliding grip is then moved to embed its teeth or serrations in said thong and thus fasten the latter to the guide piece. The tightening lever is now swung outwardly over the segmentally arranged holes or depressions in the base plate and owing to the pivotal attachment of the guide piece to the lever the arcuate movement of the latter is converted into a straight and direct pull on the thongs. lVhen sufficient tension has been thus exerted on the thongs the catch of the lever is engaged in one of the holes or depressions 22 thereby holding the cover sections firmly and tightly upon the leaves. rllhe key may be then turned in the lock 27 to prevent unauthorized operation of the lever and removal of the leaves as aforesaid.

.By the invention a simple, inexpensive and highly efficient means of tightening and locking the two cover sections upon the leaves is provided. Any desired leverage and tension being obtainable to accord with the size of the book or other requirements, by varying the length of the tightening lever and the relative positions of its pivot and the pivotal point of the guide piece thereon. It will be evident that said lever may be of any desired shape, such for instance as a disc or segment of a circle, with equivalent results.

Furthermore, it is to be understood that the grip and other parts of the device may be altered or modified in various respects without departing from the spirit and scope of the invention which resides primarily in the mea-ns whereby the swinging or pivotal movement of the tightening lever is converted into a straight or linear pull on the thongs.

Having now described my invention what I claim as new and desire to secure by Letters Patent is l. ln a loose leaf book or binder of the kind wherein the cover sections are united by flexible binding thongs or tapes the cornbination with a fastening thong connected to the binding thongsupon one of the cover sections, a. tightening lever mounted on said last named cover section, a guide piece pivoted to the *tightening lever and slidably accommodating the fastening thong and means to grip said fastening thong upon said guide piece for the purpose set forth.

2. In a loose leaf book orbinder of the kind wherein the cover sections are united by flexible binding thongs or tapes the combination with a fastening thong connected to the binding thongs upon one of the cover sections, of a tightening lever mounted on said last named cover section, a guide piece pivoted to the tightening lever, said fastening thong passing` through the guide piece, and a sliding grip accommodated by the guide piece and adapted to grip the fastening thong when moved in the opposite direction on the guide piece, for the purpose set forth.

3. ln a loose leaf book or binder of the kind wherein the cover sections are united llO iis

by flexible binding thongs or tapes, the combination with a fastening thong connected to the binding thongs upon one o the cover sections, a tightening lever mounted on said last named cover section, a guide piece pivoted to the tightening lever and slidably accommodating the fastening thong and a sliding grip accommodated by the guide piece and having teeth or serrations at one end, an inclined portion adjacent said serrations and an upstendingr lug or linger portion at its other end whereby the teeth or serrations are forced into the Jfastening thongrby engagement of said inclined portion with the guide piece substantially as described.

4t. ln a loose leal book or binder of the kind wherein the cover sections are united by iiexible binding thongs or tapes, the combination with a fastening thong connected to the binding thongs upon one of the cover sections, ot a tightening lever mounted on said last-named cover section, a guide piece pivoted to said lever and having overturned side edges adapted to` form a guideway `,for the fastening thong and a sliding grip accommodatedby said guideway and adapted to grip the fastening thong upon the guide piece for the purpose set forth.

5. ln a loose leall book or binder oi the kind wherein the cover sections are united by 'lexible binding thongs or tapes, means fior exerting tension on said thongs to contract the cover 'sections upon the leaves, comprising a tightening lever, a pivotal connection between sai lever and one ot the thongs whereby the swinging or pivotal movement ot the tightening lever is converted into a straight or linear pull on the thongs, and a catch carried by the tightening lever and adapted to engage holes or depressions in a relatively stationary part to lock said lever in diii'erent angular positions for the purpose set torth.

ln a loose leaf book or binder of the kind wherein the cover sections are yunited by flexible binding thongs or tapes, means tor exerting tension upon said thongs to contract the cover sections upon the leaves, comprising a tightening lever, means pivoted to said lever to grip one of the thongs and a catch carried by said lever and adapted to engage holes or depressions in an adjacent member whereby the lever is locked in different angular positions7 said catch be-` ing hooked or inclined so as to rise out'of said holes or depressions when the lever is moved in one direction and to be lirrnly retained in such holes or depressions by the tension of the thongs on the lever in the opposite direction.

Vin a loose leaf book or binder of the` exerting tension on said thongs to coning lever and adapted to engage said holes "f er depressions to lock the tightening lever in diilerent angular positions.

8. ln a loose leai book or binder 'of the kind wherein thel cover sections are united by iexible binding thongs or tapes, means for exerting tension on said thongs to contract the cover sections upon the leaves, comprising a tightening lever, a pivotal connection between said lever kand one of the thongs whereby the swinging or pivotal movement of t-he tightening lever is converted into a straight or linear pull on the thongs and an upstanding lug' or finger piece on the tightening lever near its outer end for the purpose set forth.

9. ln a loose leaf book or binder of the kind wherein. the cover sections are united by flexible binding thongs or tapes, means 'for exerting tension on said thongs to contract the cover sections upon the leaves, comprising a tightening lever, a pivotal connection between said lever and one of the thongs whereby the swinging or pivotal movement of the tightening lever is convertedv into a straight or linear pull on the thongs, a segmental locking piece or extension carried by the outer end of the tightening lever and a lock arranged adjacent said extension whereby the latch or bolt of the lock is adapted to engage the extension to prevent unauthorized manipulation of the tightening lever.

10. In a loose leaf book or binder of the type whereinthe cover sections are united by flexible binding thongs or tapes on which one ot' the cover sections slides, the combination with a 'fastening thong connected to said binding thongs in the slidable cover section, ot tightening lever pivoted on said slidable cover section, means to retain said lever, in different angular positions about its pivot and a thong gripping device pivoted to said lever whereby the tastening thong may be secured to or released from the tightening lever for the purpose specified.

ll.. In loose leaf book or binder of the type wherein the cover sections are united by flexible binding thongs or tapes on which one of the cover sections slides, the combination with a fastening thong connected to said binding thongs in the slidable cover section oit a tightening lever pivoted on said slidable cover section, means carried by said lever to grip the fastening depressions e all l e :etch carried by seid lever and ,'ienteoi to engage eeginentely arranged or depressions a base plate and e L ueuated lock @ranged adjeeen the iihtenin o ei` and adapted. o prevent un- :inthoized nianipuiaion thereof for the famose set forth. y

n loose leef book o? binder of the type wherein he cover sections are united Hy iexibie binding thongs or tapes on which one of the @over eecione` Slides, ehe combination with e fastening; thong connected to een?. binding` thongs Within the eiidable u ver seeion.7 of e tightening lever mounted Within the cove?? Sections, en outstanding fingen piece cei'ied by said lever and projecting hrough o.. segmental Slot oi` opening in the inner mitch adapten?, to look die tighzening lever '.vheeby *che gripping; means may be manipulated to grip oi' eieese the fasening ihonp; for the pupoeespeeiced.

in eeigimony wiez'eonx my signa-ture. 30

F. B. A. KXRSTEN.

Jiimeee CECIL P. GLASTERN. 

